This was very true because of the superb designs from this period. This era was centered on women and the beauty of nature, and the pieces were often large in size. Enamel was a commonly used material in Art Nouveau jewelry, as the era was more focused on the importance of design than the materials used to create it.
The Art Nouveau period occurred before the start of World War I, when mass production took over the production of many products, including some jewelry.